diff --git a/volatility3/framework/plugins/linux/lsof.py b/volatility3/framework/plugins/linux/lsof.py index fa9d2bf61..167556e7d 100644 --- a/volatility3/framework/plugins/linux/lsof.py +++ b/volatility3/framework/plugins/linux/lsof.py @@ -6,7 +6,7 @@ found in Linux's /proc file system.""" import logging, datetime from typing import List, Callable -from volatility3.framework import renderers, interfaces, constants +from volatility3.framework import renderers, interfaces, constants, exceptions from volatility3.framework.configuration import requirements from volatility3.framework.interfaces import plugins from volatility3.framework.objects import utility @@ -46,7 +46,30 @@ class Lsof(plugins.PluginInterface, timeliner.TimeLinerInterface): ] @classmethod - def list_fds_and_inodes( + def get_inode_metadata(cls, filp: interfaces.objects.ObjectInterface): + try: + dentry = filp.get_dentry() + if dentry: + inode_object = dentry.d_inode + if inode_object and inode_object.is_valid(): + itype = ( + inode_object.get_inode_type() or renderers.NotAvailableValue() + ) + return ( + inode_object.i_ino, + itype, + inode_object.i_size, + inode_object.get_file_mode(), + inode_object.get_change_time(), + inode_object.get_modification_time(), + inode_object.get_access_time(), + ) + except (exceptions.InvalidAddressException, AttributeError) as e: + vollog.warning(f"Can't get inode metadata: {e}") + return tuple(renderers.NotAvailableValue() for _ in range(7)) + + @classmethod + def list_fds( cls, context: interfaces.context.ContextInterface, symbol_table: str, @@ -67,26 +90,27 @@ class Lsof(plugins.PluginInterface, timeliner.TimeLinerInterface): ) for fd_fields in fd_generator: - fd_num, filp, full_path = fd_fields - inode_metadata = linux.LinuxUtilities.get_inode_metadata(context, filp) - try: - inode_num, itype, file_size, imode, ctime, mtime, atime = next( - inode_metadata - ) - except Exception as e: - vollog.warning( - f"Can't get inode metadata for file descriptor {fd_num}: {e}" - ) - inode_num = itype = file_size = imode = ctime = mtime = atime = ( - renderers.NotAvailableValue() - ) - yield pid, task_comm, task, fd_num, filp, full_path, inode_num, itype, imode, ctime, mtime, atime, file_size + yield pid, task_comm, task, fd_fields + + @classmethod + def list_fds_and_inodes( + cls, + context: interfaces.context.ContextInterface, + symbol_table: str, + filter_func: Callable[[int], bool] = lambda _: False, + ): + for pid, task_comm, task, (fd_num, filp, full_path) in cls.list_fds( + context, symbol_table, filter_func + ): + inode_metadata = cls.get_inode_metadata(filp) + yield pid, task_comm, task, fd_num, filp, full_path, inode_metadata def _generator(self, pids, symbol_table): filter_func = pslist.PsList.create_pid_filter(pids) fds_generator = self.list_fds_and_inodes( self.context, symbol_table, filter_func=filter_func ) + for ( pid, task_comm, @@ -94,14 +118,9 @@ class Lsof(plugins.PluginInterface, timeliner.TimeLinerInterface): fd_num, filp, full_path, - inode_num, - itype, - imode, - ctime, - mtime, - atime, - file_size, + inode_metadata, ) in fds_generator: + inode_num, itype, file_size, imode, ctime, mtime, atime = inode_metadata fields = ( pid, task_comm, diff --git a/volatility3/framework/symbols/linux/__init__.py b/volatility3/framework/symbols/linux/__init__.py index d52c43dae..03353135d 100644 --- a/volatility3/framework/symbols/linux/__init__.py +++ b/volatility3/framework/symbols/linux/__init__.py @@ -1,8 +1,8 @@ -# This file is Copyright 2024 Volatility Foundation and licensed under the Volatility Software License 1.0 +# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0 # which is available at https://www.volatilityfoundation.org/license/vsl-v1.0 # from typing import Iterator, List, Tuple, Optional, Union -import datetime, stat + from volatility3 import framework from volatility3.framework import constants, exceptions, interfaces, objects from volatility3.framework.objects import utility @@ -67,7 +67,7 @@ class LinuxKernelIntermedSymbols(intermed.IntermediateSymbolTable): class LinuxUtilities(interfaces.configuration.VersionableInterface): """Class with multiple useful linux functions.""" - _version = (2, 2, 0) + _version = (2, 1, 0) _required_framework_version = (2, 0, 0) framework.require_interface_version(*_required_framework_version) @@ -274,26 +274,6 @@ class LinuxUtilities(interfaces.configuration.VersionableInterface): yield fd_num, filp, full_path - @classmethod - def get_inode_metadata(cls, context: interfaces.context.ContextInterface, filp): - """ - A helper function that gets the inodes metadata from a file descriptor - """ - dentry = filp.get_dentry() - if dentry: - inode_object = dentry.d_inode - if inode_object and inode_object.is_valid(): - itype = inode_object.get_inode_type() or "?" - yield ( - inode_object.i_ino, - itype, - inode_object.i_size, - inode_object.get_file_mode(), - inode_object.get_change_time(), - inode_object.get_modification_time(), - inode_object.get_access_time(), - ) - @classmethod def mask_mods_list( cls,